Messages in this thread | | | Date | Wed, 12 Sep 2018 11:36:21 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH 4/4] sched/numa: Do not move imbalanced load purely on the basis of an idle CPU |
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On Wed, Sep 12, 2018 at 12:24:10PM +0530, Srikar Dronamraju wrote:
> Kernel A = 4.18+ 13 sched patches part of v4.19-rc1. > Kernel B = Kernel A + 6 patches (http://lore.kernel.org/lkml/1533276841-16341-1-git-send-email-srikar@linux.vnet.ibm.com) > Kernel C = Kernel B - (Avoid task migration for small numa improvement) i.e > http://lore.kernel.org/lkml/1533276841-16341-4-git-send-email-srikar@linux.vnet.ibm.com > + 2 patches from Mel > (Do not move imbalanced load purely) > http://lore.kernel.org/lkml/20180907101139.20760-5-mgorman@techsingularity.net > (Stop comparing tasks for NUMA placement) > http://lore.kernel.org/lkml/20180907101139.20760-4-mgorman@techsingularity.net
But that's not a fair comparison :/ You've complicated things by adding that second patch from Mel.
Now you cannot (unambiguously) tell what the cause for the performance difference is.
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